About: ForMAX.v1.2.SHK 

This is a freeware ProDOS 8 system application that does very fast mass formats
with any 800k ProDOS floppy disk using one or two disk drives.  It allows a
format interleave selection of 1:1 thru 1:4 also.  This utility is unique with
its interleave select options. I donıt know of any other program that offers
such an interleave selection  Itıs a very small ProDOS application around 17k
or so in size. About the same as itıs archive is.